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Mastering Metric Units: SI System Basics

Understand the International System of units, metric prefixes, and conversions. Learn to utilize the metric system effectively in scientific measurements with examples and practice questions.

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Mastering Metric Units: SI System Basics

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  1. Using Numbers in ScienceANDMetric System

  2. Scientific Measurements • Made in metric units • Referred to as the International System or SI units • Based on the decimal system • Related by powers of 10 • Each type has a base unit • Use prefixes to refer to a unit larger or smaller than the base by some power of 10

  3. SI (International System) units Centigrade or Celsius = ºC This is the unit we will use in lab for temperatures!

  4. Prefixes for Metric Units <1 deci (d) = 1/10 = 0.1 centi (c) = 1/100 = 0.01 milli (m) = 1/1000 = 0.001 decimilli (dm) 10-4 centimilli (cm) 10-5 micro (µ)10-6 = 1/100000 = 0.000001

  5. Prefixes for Metric Units >1 deka (da) = 10 hecto (h) = 100 kilo (k) = 1000

  6. Kilometer

  7. Meter

  8. Centimeter

  9. Metric Unit Conversions (blue chart)

  10. Comparison Ideas equals equals

  11. Class ActivityWhat are the correct abbreviations?

  12. Review Questions 1. What does the prefix "milli" mean? • millionth • thousandth • hundredth • A liter is a little more than a _______ • pound • gallon • quart

  13. 3. What is a good height for a basketball player?   A. 6 meters   B. 2 meters   C. 6 millimeters 4. Which is the longer distance to run ? • 50 meters • 50 kilometers • 50 miles

  14. 5. Which value would be right for the mass of a   A. 17 mg   B. 17 g   C. 17 kg 6. Which value would be right for the mass of a   A. 460 mg   B. 460 g   C. 460 kg

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